The perimeter of a rectangular plate is 60 inches. If the ratio of the width to the length is 2:3, find the length of the plate in feet

Question

I don't know why, but I'm having a hard time grasping the concept of this

Answer 1

Hi Kenny,

Since the ratio is 2:3, then we can let the width and length be 2x and 3x.

 

2*(2x+3x) = 60 

10x = 60

x = 6 inches

Then, the length is 3x = 3*6 = 18 inches